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  <script>
    // Promise.resolve:
    // — 默认返回一个成功的promise实例，值是resolve后面接收到的值， 可以快速将一个值包装成promise实例
    // — 当返回的是一个promise实例时，则resolve与这个promise实例保持一致


    const p1 = Promise.resolve(1)
    console.log("p1", p1);


    const p2 = Promise.resolve(
      new Promise((resolve, reject) => {
        resolve("这是p2")
      })
    )

    console.log("p2", p2);

    const p3 = Promise.resolve(
      new Promise((resolve, reject) => {
        reject("错误")
      })
    )
    console.log("p3", p3);
  </script>
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